TMC2072-MD SMSC, TMC2072-MD Datasheet - Page 3

• Manufacturer Part Number: TMC2072-MD
• Description: Network Controller & Processor ICs Peripheral Mode CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2072-MD

• Product: Controller Area Network (CAN)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Peripheral Mode CircLink™ Controller
Datasheet
TABLE OF CONTENTS
Chapter 1
1.1
1.2
1.3
1.4
1.5
Chapter 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
SMSC TMC2072
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
1.5.6
1.5.7
1.5.8
1.5.9
1.5.10
1.5.11
1.5.12
1.5.13
1.5.14
1.5.15
1.5.16
1.5.17
1.5.18
1.5.19
1.5.20
1.5.21
1.5.22
2.4.1
2.4.2
2.4.3
2.5.1
2.5.2
2.5.3
2.6.1
2.6.2
2.7.1
2.7.2
2.8.1
2.8.2
About CircLink ..................................................................................................................................... 6
About the TMC2072 ............................................................................................................................ 7
Pin Configuration................................................................................................................................. 9
Pin Description by Functions............................................................................................................. 14
User Setup Pins ................................................................................................................................ 16
Communication Specification............................................................................................................ 25
Message Class.................................................................................................................................. 25
CircLink Network Communication Protocol Overview ...................................................................... 26
CircLink Protocol Enhancement........................................................................................................ 27
RAM Page Expansion ....................................................................................................................... 28
CPU Interface.................................................................................................................................... 33
Operation and Communication Modes of CircLink ........................................................................... 35
Sending in Peripheral Mode.............................................................................................................. 38
CPU Interface (27)..................................................................................................................................14
Transceiver Interface (5).........................................................................................................................14
Setup Pin (33).........................................................................................................................................14
External Output or Input/output (10) .......................................................................................................15
Other Input (5) ........................................................................................................................................15
Clock (3) .................................................................................................................................................16
CPU Type Selection ...............................................................................................................................16
Address Multiplex Selection....................................................................................................................17
Write Timing Selection............................................................................................................................19
Read Timing Selection............................................................................................................................20
Data Bus Width Selection .......................................................................................................................21
Data Bus Byte Swap ...............................................................................................................................21
Data Strobe Polarity Specification ..........................................................................................................21
Page Size Selection................................................................................................................................21
MAXID Number Setup ............................................................................................................................21
Reducing Token Loss .............................................................................................................................27
Reduction of Network Reconfiguration Time...........................................................................................27
Reduction of Reconfiguration Burst Signal Send Time. ..........................................................................28
RAM Access ...........................................................................................................................................29
Packet Buffer Structure...........................................................................................................................31
Packet Data Structure.............................................................................................................................32
CPU Identification and Compatibility Between Intel and Motorola Processors........................................33
Interface Restrictions ..............................................................................................................................34
Operation Mode ......................................................................................................................................35
Communication Mode.............................................................................................................................36
Example of Sending Control from CPU in Free Format Mode ................................................................38
TX Control from CPU in Remote Buffer Mode ........................................................................................39
General Description ............................................................................................................. 6
Node ID Setup.....................................................................................................................................22
NST Resolution Setup.........................................................................................................................22
Standalone Mode Specification (Not supported) .................................................................................22
Warning Timer Resolution...................................................................................................................22
Diagnosis Mode ..................................................................................................................................22
Prescaler Setup for Communication Speed ........................................................................................23
CPU Interface Bus Timing Selection ...................................................................................................23
CMI Bypass Specification....................................................................................................................23
ON/OFF of HUB Function ...................................................................................................................23
Optical Transceiver Mode ...................................................................................................................24
TXEN Polarity Select...........................................................................................................................24
Extension Timer Setting 1 ...................................................................................................................24
Test Pins .............................................................................................................................................24
Functional Description....................................................................................................... 25
DATASHEET
Page 3
Revision 0.1 (06-07-07)